The interest in eco-friendly energy is increasing for environmental conservation, polymer electrolyte membrane fuel cell(PEMFC) are attracting attention as alternative power sources. Research on metallic bipolar plates, one of the fuel cell components, is actively conducted. Since the operating condition of the PEMFC is strong acidity in which sulfuric acid(H2SO4) and hydrofluoric acid(HF) are mixed, the durability of the metallic bipolar plates is very important. Titanium has excellent mechanical performance at various temperatures, excellent corrosion resistance, and high specific strength. So, light weight is possible when titanium is used as a bipolar plate. However, due to TiO2 passivation film formed on the titanium surface, corrosion resistance is improved but electrical conductivity is lowered. In this investigation, various surface treatments were applied on a titanium(Grade 1) to increase corrosion resistance and electrical conductivity. The various analysis(XRD, EDS, FE-SEM) and electrochemical characteristics(potentiodynamic polarization, potentiostatic experiment) were evaluated. The corrosion experiments were conducted in an aqueous solution of pH3 (H2SO4 + 0.1 ppm HF, 80 ℃) determined by the Department of Energy (DoE). The hydrogen gas and air were bubbled to simulate anode and cathode environments. PEMFC makes use of the Nafion membrane, which is a perfluorinated sulfonic acid ionomer. The reason pH 3 (H2SO4 + 0.1 ppm HF, 80 °C) is used is that the Nafion membrane has sulfonic acid groups (-SO3H), and a small amount of F- ions caused by the degradation of the Nafion membrane creates a corrosive environment. As a result of electrochemical experiments, TiN deposited by arc ion plating method presented excellent corrosion resistance with a value of less than 1μA/cm2 at both anode and cathode. In addition, the interfacial contact resistance presented a value of 10mΩ·cm2 or less, confirming that the electrical conductivity was improved. In the case of CrN deposited by the ion beam assisted deposition(IBAD) method, Cr2N and CrN were formed, and the electrical conductivity was superior to that of CrN deposited by arc ion plating. However, due to the formation of pores on the surface, corrosion resistance was superior to CrN deposited with arc ion plating. In the MMO(Ru/Ti) coating formed by thermal oxidation, the interfacial contact resistance increased due to the formation of TiO2. In addition, the surface area increased due to the formation of a cracked dried surface, resulting in an increase in current density.